JavaScript: Join all given URL segments together, then normalizes the resulting URL

JavaScript fundamental (ES6 Syntax): Exercise-55 with Solution

Write a JavaScript program to join all given URL segments together, then normalize the resulting URL.

• Use String.prototype.join('/') to combine URL segments.
• Use a series of String.prototype.replace() calls with various regexps to normalize the resulting URL (remove double slashes, add proper slashes for protocol, remove slashes before parameters, combine parameters with '&' and normalize first parameter delimiter).

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
const URL_Join = (...args) =>
  args
    .join('/')
    .replace(/[\/]+/g, '/')
    .replace(/^(.+):\//, '$1://')
    .replace(/^file:/, 'file:/')
    .replace(/\/(\?|&|#[^!])/g, '$1')
    .replace(/\?/g, '&')
    .replace('&', '?');

console.log(URL_Join('http://www.google.com', 'a', '/b/cd', '?foo=123', '?bar=foo'));

Sample Output:

http://www.google.com/a/b/cd?foo=123&bar=foo

Pictorial Presentation:

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-55-1 by w3resource (@w3resource) on CodePen.

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